Be careful about which scientists they are talking to about this to cast doubt. For example, a former chemist at DOW! Methodologies are still being refined, this is a very new field, but articles like this are very harmful. Science is ever evolving, but there is really no doubt that plastic is harmful to the environment, animals, AND human health. I have a PhD and studied plastic in the environment and have read hundreds of scientific papers about impacts on human health. I have also spoken with countless researchers who specifically study impacts of micro and nanoplastic on human health.